Specialty Granules LLC

SGI is a leading mining and mineral processing company specializing in the development of roofing products, building materials, and soil amendments for agriculture. Headquartered in Hagerstown, MD, we have five production plants strategically located nationwide that help us to be agile as we fulfill customer needs. Our status as an industry leader is a reflection of the priority we place on the relationships we build with customers, acting as an extension of their teams as we work together to navigate challenges and develop innovative solutions. As a Standard Industries company, we leverage the reach and reputation of a privately held, forward-thinking global industrial company focused on innovation. The Standard ecosystem spans a broad array of holdings, technologies, and investments—including both public and private companies from early to late-stage—as well as world-class building solutions, performance materials, logistics, real estate, and next-generation solar technology.